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1// SPDX-License-Identifier: GPL-2.0-only2/* Copyright (c) 2013, The Linux Foundation. All rights reserved.3 */4 5#include <linux/delay.h>6#include <linux/err.h>7#include <linux/init.h>8#include <linux/kernel.h>9#include <linux/io.h>10#include <linux/of.h>11#include <linux/platform_device.h>12#include <linux/module.h>13#include <linux/reboot.h>14#include <linux/pm.h>15 16static void __iomem *msm_ps_hold;17 18static int do_msm_poweroff(struct sys_off_data *data)19{20 writel(0, msm_ps_hold);21 mdelay(10000);22 23 return NOTIFY_DONE;24}25 26static int msm_restart_probe(struct platform_device *pdev)27{28 msm_ps_hold = devm_platform_ioremap_resource(pdev, 0);29 if (IS_ERR(msm_ps_hold))30 return PTR_ERR(msm_ps_hold);31 32 devm_register_sys_off_handler(&pdev->dev, SYS_OFF_MODE_RESTART,33 128, do_msm_poweroff, NULL);34 35 devm_register_sys_off_handler(&pdev->dev, SYS_OFF_MODE_POWER_OFF,36 SYS_OFF_PRIO_DEFAULT, do_msm_poweroff,37 NULL);38 39 return 0;40}41 42static const struct of_device_id of_msm_restart_match[] = {43 { .compatible = "qcom,pshold", },44 {},45};46MODULE_DEVICE_TABLE(of, of_msm_restart_match);47 48static struct platform_driver msm_restart_driver = {49 .probe = msm_restart_probe,50 .driver = {51 .name = "msm-restart",52 .of_match_table = of_match_ptr(of_msm_restart_match),53 },54};55builtin_platform_driver(msm_restart_driver);56